4xit

Discovery of novel oxazepine and diazepine carboxamides as two new classes of heat shock protein 90 inhibitors

Method: X-RAY DIFFRACTION Dmax: 55.2 Å Quality: EXCELLENT

1. Protein Identity and Related Structures Protein Identity & Related Structures

Heat shock protein HSP 90-alpha

Homo sapiens

UniProt P07900

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 131–358 Fragment:residues 131-358 40Z 2-chloro-5-(furan-2-ylmethyl)-8,11,11-trimethyl-9-oxo-6,7,9,10,11,12-hexahydro-5H-indolo[1,2-a][1,5]benzodiazepine-3-carboxamide × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;277 K;20-25% PEGMME2K, 100MM MGCL2, 100MM REMARK 280 CACODYLATE PH 6.5 Resolution 1.86 Å R-free 0.223

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

438 other PDB entries and 530 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name HS90A_HUMAN
Isoform P07900-2
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 6–233; UniProt 131–358

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 4xit

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4xit
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4xit
Deposition date deposition_date2015-01-07
Structure title titleDiscovery of novel oxazepine and diazepine carboxamides as two new classes of heat shock protein 90 inhibitors
Keywords keywordsCHAPERONE-CHAPERONE INHIBITOR complex; Chaperone/chaperone Inhibitor
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier18.09
Radius of gyration Rg (electron density) rg_electron16.72
Forward intensity I(0) i09917620.00
Molecular weight molecular_weight23756.0 kDa
Excluded volume excluded_volume29952 ų
Envelope volume envelope_volume34277 ų
Hydration-shell volume shell_volume16975 ų
Envelope diameter envelope_diameter54.5
Shell Rg shell_rg23.04
Envelope Rg envelope_rg17.05
Shape Rg shape_rg16.71
Total Rg total_rg17.81
Total atoms total_atoms1673
Residues n_residues208
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax55.2
Rg (real space) rg_real17.94
Rg uncertainty (real space) rg_real_error0.19
I(0) (real space) i0_real9.9180e+06
I(0) uncertainty (real space) i0_real_error1.0220e+05
Rg (reciprocal space) rg_reciprocal17.96
I(0) (reciprocal space) i0_reciprocal9918000.0000
Solution quality estimate total_estimate0.9036
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary22.4
Skewness Skewness skewness0.079
Kurtosis Kurtosis kurtosis-0.496
Angular range angular_range— – 0.4400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2150000.0000
Real-space data points n_real_points75
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.922; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.980; Smooth: 0.998

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd4xita_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.122 — ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
Superfamily Superfamily superfamilyd.122.1 — ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
Family Family familyd.122.1.1 — Heat shock protein 90, HSP90, N-terminal domain

CATH v4.4 (1 domains)

Domain ID domain_id4xitA00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology565 — Heat Shock Protein 90
Homologous superfamily homologous superfamily10 — Histidine kinase-like ATPase, C-terminal domain

8. Citations (1)

9. Files and Curves (10)